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  1. 2 Folia Biologica

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  1. 1 2000

  2. 1 1996

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  1. 2 Swiatkiewicz G.

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The presence of acetylcholinesterase-positive nerve fibers in the deep pineal gland and the pineal stalk but not in the superficial part of adult albino rats

100%
Swiatkiewicz G.
Folia Biologica
|
2000
|
vol. 48
|
issue 3-4
97-103
EN
Application of the histochemical method for testing acetylcholinesterase (AChE, EC 3.1.1.7) showed the presence of AChE-positive nerve fibers in the deep pineal gland and the pineal stalk but not in the superficial part of adult albino rats. These findings may indirectly support the existence of the potentially cholinergic innervation of at least some of the rat pinealocytes present in these parts of the gland and augment the evidence of the heterogeneity of the rat pinealocytes. It is possible that cholinergic neurons in the medial habenular nuclei or in the parasympathetic sphenopalatine ganglion may be a source of these AChE-positive fibres.The examination was performed at the light microscope level.
2

Absence of acetycholinesterase-positive nerve structure in the superficial part of the pineal gland of adult albino rats

100%
Swiatkiewicz G.
Folia Biologica
|
1996
|
vol. 44
131-136
EN
Application of the histochemical method for testing acetylcholiesterase (AChE, EC 3.1.1.7) combined with silver impregnation of the nervous tissue showed the absence of AChE-positive nerve structures in the superficial part of the pineal gland in adult male albino rats. It was carried out at the level of the light miscroscope. If it is assumed that the test for the presence of AChE is a form of indirect conclusion concerning the cholinergic nature of given nerve structures, then in the case of the superficial innervation of the pineal gland, the outcome of the test is negative.
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